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Average strength and related properties of five foreign woods tested at the forest products laboratory

Madison, Wis. : U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory
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CREEO FOREST PRODUCTS LABORATOIW LIBRAR Y In cooperation with the University of Wisconsi n MADISON, WISCONSIN I AVERAGE STRENGTH AND RELATED PROPERTIE S OF FIVE FOREIGN WOODS TESTED AT TH E FOREST PRODUCTS LABORATORY By GEORGE E . HECK Engineer Published i n Manufacturer's Section of FURNITURE INDEX March 1937 10M.MaMMINP U. S. Department of Agriculture, Forest Servic e FOREST PRODUCTS LABORATORY { AVERAGE STRENGTH AND RELATED PROPERTIES OF FIVE FOREIGN WOOD S TESTED AT THE FOREST PRODUCTS LABORATORY By G . E . HECK, Engineer Although the Forest Products Laboratory has not included i n its regular program the testing of foreign woods, it has, in connectio n with various cooperative projects, obtained some first-hand data on th e strength and related properties of a number of foreign species that ar e of current interest to the American trade and consumers . These data have been recently assembled in the accompanying table which is here publishe d for the first time . The species included are mahogany, khaya, tanguile , prima vera, and Spanish cedar .- Khaya is often referred to in the trad e as "African mahogany" ; tanguile as "Philippine mahogany" ; and prima ver a as "white mahogany . " It is the purpose of this article not only to present strengt h data on the foregoing five species but also to give a brief descriptio n of the material used in the tests, including place of growth, moistur e condition, -amount of material represented, number of tests, and the like . The tests on foreign woods reported here, except for selectio n and matching of material, were made in accordance with the same standar d procedure as employed on woods grown in the United States . As far as test procedure is concerned, therefore, the data are comparable with dat a on our native woods already published . The specimens tested were 2 by 2 inches in cross-section, the length depending on the kind of test . The testing procedure used at the Laboratory has been adopted as standard b y

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